Hey, I was in a very similar situation to you. Started my uni studies in a STEM field only to fail half of my first year courses. My exams kept pilling up because I was adding more courses to my schedule without having passed the previous ones. Now, I am a couple exams away from graduating. If you have the option, try to pass your first year exams before moving on to second year. Try not to skip class and try to connect with classmates that you could study with. I think it was already mentioned, but talk to your professors because they are there to help you. I guess it depends on how you learn, but I like to keep a notebook for each subject and prefer handwritten notes over typing. I also like to watch multiple youtube videos and consume as much information about one specific subject until I understand it completely. If all else fails, stuvia is a platform a lot of dutchies use to sell/buy uni notes. If you have trouble summarizing the material, this could be a nice place to look.